Communicating new results & insights!


“The formulation of a problem is often more essential than its solution, which may be merely a matter of mathematical or experimental skill.” - Einstein

In research, I deal with business & information systems engineering and sustainable smart districts & mobility. I use a broad spectrum of methods, including data analytics, as well as qualitative methods.

I’ve been asked to review for several renowned journals and conferences in the field of Business & Information Systems Engineering (e.g., Business Research, International Conference on Information Systems) and Energy Informatics (e.g., Joule). I also served as Associate Editor for the European Conference on Information Systems and the International Conference on Wirtschaftsinformatik. Furthermore, I am an external reviewer for some doctoral theses at the Université du Luxembourg.

See attached my publications:

Conferences and Journals


  • Baumgarte, F., Dombezki, L., Kecht, C., Wolf, L., Keller, R. (2021) “AI-based Decision Support for Sustainable Operation of Electric Vehicle Charging Parks“, Proceedings of the 54th Hawaii International Conference on System Sciences.
  • Sedlmeir, J., Buhl, H. U., Fridgen, G., Keller, R. (2021) “Recent Developments in Blockchain Technology and their Impact on Energy Consumption”, arXiv:2102.07886.


  • Fridgen, G., Keller, R., Körner, M., Schöpf, M. (2020). “A holistic view on sector coupling”, Energy Policy (147), Article 111913.
  • Keller, R., Fridgen, G., Häfner, L., Sachs, T. (2020). “Scheduling Flexible Demand in Cloud Computing Spot Markets – A Real Options Approach”, Business & Information Systems Engineering (62:1), pp. 25-38.
  • Oesterle, S., Jöhnk, J., Keller, R., Urbach, N., and Yu, X. (2020) “A Contingency Lens on Cloud Provider Management Processes”, Business Research (13:3), pp. 1451-1489.
  • Sedlmeir, J., Buhl, H. U., Fridgen, G., Keller, R. (2020). “Ein Blick auf aktuelle Entwicklungen bei Blockchains und deren Auswirkungen auf den Energieverbrauch“, Informatik-Spektrum.
  • Sedlmeir, J., Buhl, H.U., Fridgen, G., Keller, R. (Forthcoming). “The Energy Consumption of Blockchain Technology: Beyond Myth”, Business & Information Systems Engineering (62:6), S. 599–608.


  • Hofmann, P., Keller, R., Urbach, N. (2019). “Inter-technology Relationship Networks: Arranging Technologies through Text Mining“, Technological Forecasting & Social Change (31), pp. 202-213.
  • Keller, R., Stohr, A., Fridgen, G., Lockl, J., Rieger, A. (2019). “Affordance-Experimentation-Actualization Theory in Artificial Intelligence Research – A Predictive Maintenance Story”, Proceedings of the 40th International Conference on Information Systems.
  • Keller, R., Ollig, P., Fridgen, G. (2019). “Dealing with Technical Debt – Logics of Agility and Reliability in IT organizations”, Proceedings of the 27th European Conference on Information Systems.
  • Keller, R., Röhrich, F., Schmidt, L., Fridgen, G. (2019). “Sustainability’s Coming Home: Preliminary Design Principles for the Sustainable Smart District”, Proceedings of the 14th International Conference on Wirtschaftsinformatik.
  • Körner, M., Bauer, D., Keller, R., Schlereth, A., Simon, P. (2019). “Extending the Automation Pyramid for Industrial Demand Side Management“, Procedia CIRP (81), pp. 998-1003.
  • Rösch, M., Bauer, D., Haupt, L., Keller, R., Bauernhansl, T., Fridgen, G., Sauer, A., Reinhart, G. (2019). “Harnessing the Full Potential of Industrial Demand-side Flexibility: An End-to-End Approach Connecting Machines with Markets Through Service-Oriented IT Platforms”, Applied Sciences (2019:9), pp. 3796-3822.
  • Thimmel, M., Keller, R., Rövekamp, P., Fridgen, G. (2019). “Compensating Balancing Demand by Spatial Load Migration – The Case of Geographically Distributed Data Centers“, Energy Policy (132), pp. 1130-1142.


  • Schott, P., Ahrens, R., Bauer, D., Hering, F., Keller, R., Pullmann, J., Schel, D., Schimmelpfennig, J., Simon, P., Weber, T., Abele, E., Bauernhansl, T., Fridgen, G., Jarke, M., Reinhart, G. (2018). “Flexible IT Platform for Synchronizing Energy Demands with Volatile Markets”, it – Information Technology (60:3), pp. 155-164.
  • Unterberger, E., Buhl, H.U., Häfner, L., Keller, F., Keller, R., Ober, S., Paulick-Thiel, C., Reinhart, G., Schöpf, M., Simon, P. (2018). “The regional and social impact of energy flexible factories”, Procedia Manufacturing (21), pp. 468-475.


  • Bauer, D., Abele, E., Ahrens, R., Bauernhansl, T., Fridgen, G., Jarke, M., Keller, F., Keller, R., Pullmann, J., Reiners, R., Reinhart, G., Schel, D., Schöpf, M., Schraml, P., Simon, P. (2017). “Flexible IT-platform to Synchronize Energy Demands with Volatile Markets”, Procedia CIRP (63), pp. 318-323.
  • Fridgen, G., Keller, R., Thimmel, M., Wederhake L. (2017). “Shifting load through space – the economics of spatial demand side management using distributed data centers”, Energy Policy (109), pp. 400-413.


  • Keller, R. (2016). “Analyse von Risikomanagementstrategien in Cloudnetzwerken – Was tun bei verknüpften, voneinander abhängigen Cloud Services?“, HMD – Praxis der Wirtschaftsinformatik (53:5), pp. 674-687.
  • Keller, R., Berlage, T. (2016). “FIT für die Zukunft“, Laborjournal (2016:01), pp. 64-65.


  • Fridgen, G., Keller, R., Thimmel, M., Wederhake L. (2015). “Virtualizing Balancing Power: An Energy-Aware Load Dispatcher for Cloud Computing”, Energy Informatics & Management.


  • Afflerbach, P., Fridgen G., Keller, R., Rathgeber, A., Strobel F. (2014). “The By-Product Effect on Metal Markets – New Insights to the Price Behavior of Minor Metals”, Resources Policy (42:1), pp. 35-44.
  • Keller, R., König, C. (2014). “A Reference Model to Support Risk Identification in Cloud Networks”, Proceedings of the 35th International Conference on Information Systems.

Books and Chapters

  • Bauernhansl, T., Bauer, D., Abele, E., Ahrens, R., Bank, L., Brugger, M., Colangelo, E., Eigenbrod, H., Fridgen, G., Gonzalez Vasquez, F., Grigorjan, A., Jarke, M., Keller, R., Lodwig, R., Pullmann, J., Reinhart, G., Rösch, M., Sauer, A., Schel, D., Schlereth, A., Schott, P., Schulz, F., Sedlmeir, J., Seitz, P., Simon, P., Weber, T. (2019) “Industrie 4.0 als Befähiger für Energieflexibilität“, in: Energieflexibilität in der deutschen Industrie : Ergebnisse aus dem Kopernikus-Projekt – Synchronisierte und energieadaptive Produktionstechnik zur flexiblen Ausrichtung von Industrieprozessen auf eine fluktuierende Energieversorgung (SynErgie).
  • Keller, R. (2019). “Cloud Networks as Platform-based Ecosystems: Detecting Management Implications for Actors in Cloud Networks”, Dissertationsschrift.
  • Duelli, C., Keller, R., Manderscheid, J., Manntz, A., Röglinger, M., Schmidt, M. (2018). “Enabling Flexible Laboratory Processes – Designing the Laboratory Information System of the Future”, in: Business Process Management Cases.